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(No Model.)

J. HIOKLING 86 T. SLATER.

MOLD FOR BOTTLE STOPPERS.

A166,676,966. i Patented Peb. 9, 1697.

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UNITED STATES PATENT OFFICE.

JAMES HICKLING AND THOMAS SLATER, OF `LONDON, ENGLAND.

MOLD FOR BOTTLE-STOPPERS.

SPECIFICATION forming part of Letters Patent No. 576,966, dated February 9, 189'?. Application iiled August 3, 'i896x Serial No1 601,504. (No model.)

To @ZZ whom it may concern.-

Be it known that we, JAMES HICKLING and THOMAS SLATER, subjects of the Queen of Great Britain, and residents of London, England, have invented certain new and useful Improvements in Molds forBottle-Stoppers, of which the following is a full, clear, and exact specification thereof.

This invention relates to a new or improved mold for casting Stoppers for bottles and the like; and it consists in so constructing and arranging the mold that the screw and head of the stopper are cast without a seam, and the same is carried out as follows.

Referring to the annexed drawings, Figure l is a plan view of a mold constructed according to our invention; Fig. 2, a side elevation of same; Fig. 3, a section through line x yy in Fig. 1 Fig. 4, a plan view of part of mold in which the heads are cast; Fig. 5, a plan view of the under side of the part of the mold in which'the screwed portion of the stopper is formed; Fig. 6, a side elevation of stopper to enlarged scale; Fig. 7, a plan view of top of same. Y

Referring to Figs. l to 5, a is a hinged or l pivoted frame carried, as shown, in the bearsys ing c by means of the pivot-pin h'. h is the part of the mold in which the screw-threaded portion of The stopper is cast in the cavity or matrix j. The part r or groove on the stopper, Fig. 6,and which carries the usual washer, is formed at the part n between the movable pieces ff and f f'. The shape of the groove at r, Fig. 6, is of course dependent upon the shape of the aperture at n, so that a half of said aperture is formed in the parts ff and f f', thatis, one-half in each part. m is a pin for insuring the correct position of the parts f f and 4o f f' when together, as shown in Fig. 5. The

parts ff and f' f' are pivoted at o to the part h, so that they may be separated, as shown by the arrows l. The glass or metal is placed in a molten state in the frame a, and the piston or plunger z' is employed to force the glass or metal throughthe apertures d in the part h, which forms the screw-thread.

is a'core or projection of suitable crosssection, such as triangular, and which forms a recess l) in the head of the stopper into The frame a may be turned up upon the pivot b' when required.

The parts g and hbeing each formed in one piece it will be seen that there will be no seam on the screwed portion p of the stopper or upon the head of same, and which maybe 6o milled, as shown at t. By removing the parth from the part g the heads of the Stoppers are removed from the cavities or matrices Z and the parts f f and f f are separated, and

thus the stopper maybe unscrewed from the part h.

Having thus described our invention, what We claim, and desire to secure by Letters Patent, is-

In molds for casting Stoppers for bottles, 7o

two-parts or sections formed so as to have seamless cavities or matrices in which the screwand head of the stopper are cast by pressing the glass thereinto, one part or section having the cavities or matrices for forming 7 5 the screw-thread upon the stopper, the other part or section having the cavities or matrices for forming the head of the stopper said cavities or matrices having cores or projections for forming a recess in the head of the stop- 8o per, movable sections or parts pivoted to the sections or parts forming the screw-thread upon the stopper and having apertures which forni the matrices for that portion of the stopper which is between the screw-thread and the head, the position of said pivoted sections or parts being regulated by studs or pins, a pivoted or hinged frame which forms a receptacle for the molten glass or metal which is forced through suitable apertures into the 9o cavities or matrices in which the stopper is cast.

In testimony that we claim the foregoing l we have hereunto set our hands this v12th day of June, 1896.

JAMES I-IIOKLIN G. THOMAS SLATER.

Witnesses BENJAMIN CLARK,

I-I. D. HosKINs. 

